Interdental toothbrush



FIG. 1 is a front perspective view of an interdental toothbrush showingmy new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines in the drawings depict portions of the interdentaltoothbrush that form no part of the claimed design.

CLAIM The ornamental design for an interdental toothbrush, as shown anddescribed.